Android:设置在Recyclerview中滚动时的搜索栏可见性

// 布局文件示例：activity_main.xml
<LinearLayout
    ...
    android:orientation="vertical">

    <SearchView
        android:id="@+id/searchView"
        ...
        />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        ...
        />

</LinearLayout>

// Activity示例：MainActivity.java
public class MainActivity extends AppCompatActivity {

    private SearchView searchView;
    private RecyclerView recyclerView;
    private MyAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 初始化Recyclerview和搜索栏
        recyclerView = findViewById(R.id.recyclerView);
        searchView = findViewById(R.id.searchView);

        // 设置Recyclerview的布局管理器和适配器
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        adapter = new MyAdapter(dataList); // 自定义Adapter
        recyclerView.setAdapter(adapter);

        // 创建自定义的OnScrollListener监听器
        recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                // 根据滚动情况来控制搜索栏的可见性
                if (dy > 0) {
                    searchView.setVisibility(View.GONE);
                } else {
                    searchView.setVisibility(View.VISIBLE);
                }
            }
        });
    }
}